What is Towel Rack?
1.
n.- when a man gets a boner in the shower and, after drying off, can drop the wet towel and have his penis catch it and hold it
John: wow, did you see Joe in the showers?? he's hung like a horse! i watched him show off by doing the towel rack as he walked out.
2.
Rack used to hang up towels.
Person: "I have a rack that I use to hang up towels on, therefore it is a towel rack."
See